Automobile-radiator.



G. G. BOEGK.

AUTOMOBILE RADlATOB. 4 Arrmoumn nur mw. 1, mo.

970,297. Patnted Septh 13,1910.

4 SHEETS-SHEET 1.

C. G. BOBCK.

AUTOMOBILE RADIATOR. APPLIoATxoN Hmm JAH. 1, 1910.

Patented Sept 13,1910.

4 BhSETB-SBEET 2.

WI T NESSES c. G. BOEGK.

AUTOMOBILE RADIATOR.

APPLIoA'HoN rxum un. 7. 1,910.

' Patentd SBI-)13. 13, 1910.

4 SHEETS-SHEET 3.

C. G. BOEGK. AUTOMOBILE RADIATOR.

APPLIOATION FILED JAB. 7. 1910. l

Patented Sept 13,1910.

4 SHEETS-SHEET 4.

[NVE N TOR /Atiornqy UNITED sra.

rafrnnr onirica.-

CHARLS G. BOECK, OF JACKSON, MICHIGAN, ASSIGNOR TO NOVLTY 'MANFACTUR- IN G COMPANY, OF JACKSON, MECHIGAN, A. CORPORATION 0F MICHIGAN.

AUTGMOBILE-BADIATOR.

. specification of Letters Patent. Patented Sgpt, Application led January 7, 1910. Serial No. 536,923.

Tooll whom 'it may concern:

Be it known that I, CHARLES G. Benoit, a citizen of the United States, residing at Jackson, in the county of Jackson and Stato of Michigan, have invented certain new and useful Improvements in Automohile-ltadi ators, of which' the following is a specilication. i

My invention relates to radiators such :is are commonly employed on iiiotor-vehicles for air-cooling the circulating fluid used for jacketing the engine-cylinders.

The'invention pertains more particularly to the `so-called cellular type of radiator,

comprising an assemblage et' open air-(lues withintervening" sealed restricted vaterpassage. approved structures ot this` chai'n acter being usually oi sl'ieet-iuetal.

In the construction of such radiators, the principal desideratnm .is to provide as much radiating surface as possible within :i given area, while restricting` the stream ol. mitm' flowing in Contact with such surface, so as tu promote rapid and elicient interchange ot? heat.

Another desideratuin, scarcely less impor tant, is to provide sufficient tiexure in the walls of the cellular structure to minimize, or to obviate if possible, the liability of rupture and leakage from treezin" consider'- able difiiciilt-y having' heretofore been expe llarly rienced from this cause. Also, the structure of the radiator should be such as to conveniently permit the making of repairs, by soldering the joints in the event of rupture.

lStill a further-important consideration is to provide'a mechanically and commercially practicall andeconomical form of manufacture. f

These severalobjeets are quite satisfactorily'attained by my invention, which pro- Vides a very practicable and efficient coiistruction of radiator of the type referred to. TheA invention Vwill hereinafter be first `fully described with reference to the :ie--

'companyi'ng drawings, which form a part of this speciication,'and thon more particu# pointed out inthe claims following the description. l Y

'In said' drawings:-Figure1 is a frontcle- Vation of an automobile radiator embodying'my'invention; a part ot' the traine or casing being broken away, and only a' portion of'the flue-sections or elements coinposing the radiator being shown. Fig. :2 1s

a .larger front Viewl of a `fragment of the radiator, showing the relative arrangement ofl through a portion of the radiator. Fig. 7v

is a persliiectivc View ot a I'iue section ofanother -form. Fig 8 is a horizontal `crossseetion through two adjacent tine-sections like Fig. 7. Fig. 9 is a vertical cross-section through a portion of the. radiator composed of {lue-sections like' Fig. 7. Fig. 10 is a front View et' a radiator embodying the invention in a :form slightly modified from that shown in F ig. l. In this view 'the traino or outside easing :is omitted, thus. reveaiing 'the upper and .lower water-chambers between which the iadiatoris placed, as well understood'inthe art. Figalis a, verticai Finition online' ll-m11 ofllig." 10; in' ie s ing the ilue sections at' the sides of theradiator. `Fig. 13 .is a cross-section ofa cap. As shown in the drawings, the illustrated radiator embodying my invention comprises au assemblage of Hat or tlattish tubular elements fl ol' sheet-metal,.which inayibe' said to have the general form-of tliin'quadrangulai' prisms. The opposite vwalls or lateral faces of said. elements a're'stamped or formed with longitudinal depressions 2, makin intei-nal rconfronting projections whichy divide the elements interiorly intoanumbery of parallel open-ended air fines 3.` vSaid' longitudinal depressions do not extend to -tlie ends of the elements, the" vfront -and'fiiear portions of which are thus left fiat-sided as shown. These tlattish sheet-met`al elements or flue-Sections, which .in the illustratedV -radiatorare arranged `vertically and in'rtiers,A

yranged in staggered relation,- so `that they overlap one another,thiis providing'restricted serpentine watei-passages 4 between the flue-sections. as seeninore clearly inl Fig. 6. Said' watei-passagcs extend of coursetrans versely ot the air-flus and are sealed at the front and bach of the radiator by the joina vfrmit elevation of caps for sealing of the flat-sided ends'of the flue-sections together as laforesaid. v

The foregoing explains the general con struction as exemplified in Figsfl to' 6 iiiclusive of thedrawings, but I prefer also` to stamp or form longitudinal external projections or raised .portions 5, as seen in Figs. 7 to 11', upon those parts of the sides of the flue-sections that liebetween the longitudinal depressions or indentations 2. These external projections 5 on each t1iiesection ex tend into the recesses or depressions 2 of the adjacent flue-sections. and thereby .restrict the water-passages at their bends and check the rapid liow atthose points; and the effect is alsoto somewhat-enlarge the air-flues in teriorly intermediate their end-portions as seen in Fig. 8. In Figs. 7 to 9 the said eX- ternal projections '5 are represented as continuous with t-he inclined walls-of the recesses or depressions 2;' while in Figs. 10 and 11 they are shown as distinct corrugations. I `consider at present the construction shown in Figs. l0 and 11 to be a preferred form of the invention.

The individual elements or fluesectioiis are preferably made each from a continuous stripof sheet-metal, the ends thereof being joined by a soldered lap-joint 6 or other Vsuitable seam; and they may be formed to provide the longitudinal depressions or'alterna-ting depressions and projections on their sides by the known or any appropriate methods of working sheet-metal, as by stampingl or pressing with dies. Heretofore I have formed the sheet-metal strip into a rectangular or flattish tube, slipped same over a mandrel and finished in a press. Alternatively, a sheet-metal strip of the required dimensions may-be first stamped with. two corresponding series of depressionsor corrugations at opposite sides of a median line, and then folded or doubled and bent into the flattish form of a thin quadrangular prism as shown, so that the indentations in vthe metal made by the depressions come opposite one another inside they prism the plural air-fines.

In Figs. l to 9, the lateral to form depressions `stampedin the flue sections are so spaced that the tops and bottoms ofthe flue-sections intermediate their flat-sided end portions, are of different form,V as will be seen in Figs. 3 to 6 wherein, to facilitate the explanation, the tops and bottoms are designated by the symbols a and b. -Either a o'r b may be the top or the bottom of an element. The inatiiig or adjoining of like parts a of two superimposed elements or flue-sections makes one complete depression 2, 't e top and bottom of such elements each forming only the onehalf part of such. depression. Adjoiiied like 'parts b of two such superimposed elements makes one full spacing between depressions.

The manner in which this arrangementis maze? or may be carried out in an entire radiator structure will be clear from Figs. l and 6. It is not necessary, however, that the several elements or flue-sections should be thus differently formed at their tops and bottoms, for both tops andbottoms of all or some of the fiuesections may be formed like a or like b. Thus in Figs. 10 and l1, which as aforesaid represents a preferred'construc tion, most of the elements or flue-sections have both their tops and bottoms alike, and similar to the part a in Fig. 3.

'In the practical construction of my radia tor, it will generally be desirable to employ elements some of whiili have lesser heights than others, as shown in Figs. l and l0; and in many instances to completely lill the space or area ofthe radiator it will 'be necessary to insert relatively small .ele-

ments; and in carrying out the general principle of the invention' these lesser elements may not have a plurality of lateral depressions; for instance, the elements 7 in. Fig.

10 have neither of ythem a full depression but are formed at their tops and botten s with halfdepressions like L in Fig. 3. lille- `ments of such character are of course to be included within the scope of my invention; it being noted, in fact, that each vertical roiv of superimposed elementst may be considered as making up a composite vertical flue-section within the terms of the first paragraph of this description.

The overlapping .of the longitudinal recesses 2 on the faces or sides of the laterallyadjacent elements or flue-sections, to pro vide the intervening water-passages, is obtained by assembling `the elements so' that 4the recesses or depressions in one flue-section alternate with those in the laterally-adjacent sections; but it is not necessary that the elements of one vertical tier should be actually displaced relative to those of the tiers beside it, as is illustrated in the drawings, for it is entirely practicable to construct lthe radiator with a single horizontal row of vertical elements of equal heights. For example, if a number of elements like that shown iir Fig. 3 be placed together side by side, arranging alternate elements witli'the part-s a. at the tcp and /the intermediate ones with the parts b at the top, itis obvious that the recesses of adjacent element-s will overlap and thus provide theL water-passages as iiol evase? lthe sides of the radiator are irregular or.

stepped, in Fig.-10,'they may be'sealed by caps 8'; shown in Figs. .l2 and 13; The

cap" 8 is or may be a strip ot' sheet-metal of." thesameftransverse'width as the length'of theflue-s'e'c'tions, andshaped to lit over'the` .steps or irregular. top and bottoirrot" 'the sides ofthe radiator.v `The cap has achan-` neled lform with'tlat margins or flanges 9 corresponding to the Hat end-portionsof the flue-sections, and 'in constructing the radiator the caps may be clamped in with the assembled 'flue-sections and the edges of the cap soldered to theedges of the outside flue-y ,There'may be separate caps attop and bottom, or they may' be formed in one piece; thatis, the topV and bottom caps may be formed at the/*opposite ends of one sheet metal strip,"instead of separately.

10 alid 11 Show theradia-tor in place between upper and' lower water-chambers as `usual in such constructions; the `upper chamber A and lower chamber B being i.

parts of a 4vvater-circulatinosystem including the engine-jacket or jackets (not shown) and suitable pipes or ducts. As seen more clearly iri'Fig. 11, the two chambers are in communication through the vertical waterpass'ags ,4,5'0l that the fluid may circulate in thin streams or columns between the vertical tiers of -flue-sections.'-

In Figl ,the vv vater-chainbers are not@ shown, being concealed behind and within the ,usual frame or outside casing C which incloses the radiator.

5 While I Iili'zkivevv-s'hown and described the radiator with its elements arranged in vertical tiers, toperniit'the fiow of water around the air cells between water-chambers placed at the top and bottom, as is now considered the preferred construction, it should be understood, however, that I do not confine inyse'lf to the arrangement illustrated, for the elements may be disposed horizontally or. Otherwise to vconduct the water across the radiator or from Side to side wliere the -Water-cliambers are located laterally, as in water-passages is obviated by lmy improvement. The elements composing the structure being substantially flat-sided prisms, stamped with the depressions or corrugations in an intermediate area of the side ot the prism, and adjacent. such elements being disposed to present their depressions in staggered relation, the water-passages are provided 'hy the overlapping of and intercominuniczition between 4the depressions or p recesses,so that there is'iio necessity lfor-einploying spacing nieans; and the fiat-sided ends ofthe adjacent elements or flue-sections are placed side by side and make close, tight, straight joints, insuring a perfect seal of the water-passages. The undulating formation of the sides ot the flue-sections is such as to render the walls of the water-passages sufficiently flexible or yielding to obviate the danger ot rupture from freezing, and any stress in the structure is not liable to separate the sealed joints or seams at the ends of the tlue-sections, since the latter are flat-sided Vand placed and held tightly together so that there can. be no tendency to break the soldered seams. Moreover, these straight seams at the front and back of the radiator could be very easily repaired by solder in the event of any possible rupture. It Will be further not'ed that the structure presents practically a maximum of radiating "surface toi' contact with the thin flowing columns of water, and in this connection the depressions 2 are preferably of substantially a form as shown to make prismatic air-tliies 3, though I do not restrict myself to suoli form., By reason of the rectangular form of the fluesections they can also be `very easily assembled, and in the completed structure the' radiator has a tlat top and bottom which adapts it to lit between' the water-chambers and to be easily sealed above and below. When the tubes are set up'in a form, clamped together and soldered in the manner stated, they rest tirmly together as willv be clearly understood. i j

While my invention is primarily designed as an automobile radiator,`being so shown and described herein, it should be understood however that I claim the invention as a cellular air-passaged cooler or heat-interchaiiger -tor whatever purpose it may be adaptable.

I claim as my invention and desire to Secure by Letters Patent.: 1

1. A radiator coiiiprising an assemblag ot prismatic tubular air-flue sections havin open rectangular ends, the same being lace immediately adjacent one another and joined at their ends, the lateral faces of said ele-l ments being formed intermediatelyuof their i .transversely of the airf1ues.

2. A radiator,comprising,an assemblage of prisniatic tubular air-flue sections'having open rectangular ends, the same being placed immediately adjacent one another and joined iat their ends, the lateral faces of said elements being formed intermediately of their fiat-sided end portions with longitudinal recesses and alternating longitudinal projections, and adjacent elements being disposed so that the recesses in the faces of one overlap with the recesses in the faces of the others, While said projections on one element extend into the recesses in adjacent elements,

elements staggered for intercommunication,

thereby providing intervening sealed Waterpassages.

4. A radiator comprising a plurality of l flattish tubular elements or flue-sections having the form othin quadrangular prisms, arranged immediately adjacent one another and joined at their ends,-the oppositevvalls of said flue-sections being formed inter- 'mediately of their flat-sided end portions with longitudinal indentations making exterior recesses and interior projections which latter divide the flue-sections into a' number of open-ended air-fines, andrlaterallyadjacent iiue-sections having their said recesses arranged in staggered relation to overlap, thereby providing sealed water-passages between the iue-sect'ionsv and transversely of the air-hues. y

5. A radiator comprising an assemblage ot' sheet-metal flue-sections arranged immeevase? dately adjacent one another and joinedat their ends, said flue-sections having the Aform of thin quadrangulai" prisms' the oppositie sides of which are stamped intermediatly of their flat-sided end portions with longitudinal depressions or' recesses and alternating projections,`said depressions makingv confronting inside projections which-.divide the Hue-sections interionly into a- -number of open-ended air-fines, and laterally adjacent flue-sections having` their depressions overlapping, While the exterior projections on "one flue-section extend into the depressions in the adjacent ones, thereby providing between the flue-sections serpentine Waterpassages Which are restricted in the bends thereof by said projections- 6. For a sheet-metal radiator structure of the Acharacter described, a tine-section or element constructed from a continuous strip of sheet metal in the form of a thin quadrangular prism thev opposite Walls of which are stamped with longitudinal indentations forming exterior recesses and interior pro-v jections dividing the lue-section interiorly into a number of open-ended air-spaces, said indentations not extending to the front and vrear ends ofthe iue-section which are left flatsided, for the purpose described.

7 In a cellularradia-tor, the .combination with an assemblage of tubular elements providing open-ended air-lines and intervening` sealed restricted Water-passages Vextending transversely of the air-fines, said elements being arranged to provide irregular sides, of stepped caps iitting over andv sealing the stepped portions at the sides, said caps being` v formed to provide Water-passages around i said stepped portions.

In testimoniT whereof I aiiix my signature,

.in presence of two Witnesses.

CHARLES Gr. BOECK.

Witnesses:

D. R. TARBELL, G. D. HAWKINS. 

